Thanks for your kindness in providing the information.
I have foolishly shown a version that was apparently misguided. My apologies.
As you pointed out, v5.27.0 would match the start date of the contract error, and since it appears to be an upgrade that affects gas prices, it seems likely that this upgrade is the cause.
I am not familiar with the technical side of things, so please point out any mistakes, but if this upgrade is the cause, it seems to me that there is still a way to implement a temporary runtime downgrade, in addition to the option of getting the dApp fixed by the ADAO operator, as you mentioned.
As for downgrading, I don’t know exactly what steps can be taken, but there may be circumstances where, for example, it is technically feasible but practically difficult because it would affect the entire network.
I would still like to borrow some wisdom from @you425 on this matter.
As for the ADAO operator, I would appreciate it if the Astar team could attempt to contact the Avault operator.
If I personally tried to contact the Avault operator, I would probably not be taken seriously. However, the Astar team, which we believe has been in close contact with the Avault operators in the past through the incubation program, may be able to contact them smoothly.
If you could ask the Avault operator about the relation with the ADAO operator based on the past suspicious transaction history, it might give us some clues, so I am sorry to ask you to do so, but I would appreciate it if you could.
I apologize for the length of this article, which is difficult to read each time.
Thank you.
*I am not good at English, so I am using a translation.